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Finding the Fourth Proportional to 658,512.30, 987,768.45 and 492,624.30

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Solution

The fourth proportional to 658,512.30, 987,768.45 and 492,624.30 is: 738,936.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,512.30 : 987,768.45 = 492,624.30 : x
  2. Step 2: Convert to fraction form
    658,512.30/987,768.45 = 492,624.30/x
  3. Step 3: Cross multiply
    658,512.30x = 987,768.45 × 492,624.30
  4. Step 4: Simplify right side
    658,512.30x = 486,598,741,243.34
  5. Step 5: Solve for x
    x = 486,598,741,243.34/658,512.30
  6. Step 6: Final answer
    x = 738,936.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.